This section is for rules and regulations, with some backgrounds of the event to help runners to understand. Please read very carefully. If you do not abide by our rules and regulations and directions from us based on them, you may be immediately disqualified or have a penalty of 1, 3 or 6 hours added to your race time. Organizer may not accept registration from those who violate our rules and regulations in previous editions.


  1. As a runner, you understand the following and must be responsible for them.
  2. Runners are responsible to observe the laws in Japan, municipal regulations, and all your activities should not be against common social justice.
  3. Both in UTMF and STY, runners will be required to keep moving forward in unique natural environment, including rugged high mountains, more than the whole day and night. It is your own responsibility to avoid any danger and keep yourself safe.
  4. Runners are able to deal with deteriorating weather conditions (low temperatures, strong winds, rain and snow) and other troubles expected, by preparing technics, knowledge, equipments, physical strength, and being able to manage your own physical conditions. You are responsible for any results from your preparation and self management.
  5. Runners are expected to follow the course with help of our course markings and signboards. You are responsible to find them and keep on track under various natural circumstances without someone's help. In case that you lose the course, you are responsible to come back by yourself with your maps and other equipments.
  6. Runners are responsible for regularly check official information and update on the event from organizer, both before and during the race. You have to observe any directions from us based on our rules and regulation.
  7. All rights of video, photo, article, timing results and other outputs relating runners in the event are reserved by organizer. We may release them for public on television programs, newspapers, magazines, internet and other media.


Several sections of the race course pass through national parks with designated sensitive wildlife areas inhabited by rare animals and plants. We require everybody to be fully aware of this and strictly abide by the following rules:

  1. The use of trekking poles is prohibited on both the UTMF and STY courses. The use of tree branches available on the side of the course as trekking poles is also prohibited.
  2. Sleeping along the course is prohibited. This is because it will have a large impact on the environment and may also mistakenly lead others to think that you require emergency medical assistance. Please manage your physical condition carefully and rest/sleep at the aid stations.
  3. Runners must stay on the trail at all times. Short cut on the edge of corner is regarded as off the trail, and prohibited. There will be sections where runners will not be able to pass each other in order to protect the environment. Please abide by all other restrictions that may also applied during the race.
  4. Picking up or damaging plants, animals, fungi and rocks found along the race course as well as within the overall race area is prohibited.
  5. Do not throw any garbage along the course.
  6. Please use the toilets located at each aid station. Also, please carry and use a portable/disposable toilet and use it if you are unable to wait. Do not throw away toilet paper along the trails. All toilet paper must be carried out with you.
  7. In order to reduce energy consumption and lower carbon dioxide emissions, we highly recommend you utilize public transportation or carpool.
  8. Please clean off the soles of your shoes before starting the race. You (both racers and pacers) must also brush off all mud and plant seeds from the sole of your shoes using the brushes provided at the aid stations when entering the race course. This is to prevent the spread of invasive species and non-native seeds as well as to ensure that vegetation from urban areas are not carried into the environmentally sensitive high mountain regions.


  1. If during the race, you encounter another runner or staff member who is injured or sick and unable to move on their own, please give priority to assisting that person by telling race staff or by calling race headquarters for assistance. The emergency telephone number for race headquarters will be written on your race number/bib.
  2. If you come across a runner who is lying down or hunched over along the course, please check to see if they are alright. If they are sleeping or resting, ask them to get up and continue. If the person requires emergency assistance, please give priority to helping that person by telling race staff or calling race headquarters for assistance.
  3. Please treat the local support and volunteer staff with respect and appreciation at all times.
  4. The race course is not on private property owned by the race and will not be closed off to the general public. Please keep in mind that the trails must be shared with the general public (including hikers) at all times. There will be "no passing sections" set up along the race course where you will be prohibited from passing both runners and hikers. In areas where passing is allowed, please do so in a safe place where the trail is wide and remember to slow down, walk and call out to let your presence be known to that person.
  5. Do not damage any property located along the race course.
  6. Portions of the race course passes through special areas and private land that is normally prohibited from entry. Please do not enter areas other than those specified by the race.
  7. The course also passes through residential areas. Please do not make loud noises or sounds when passing through these areas at night.


  1. In order to ensure race safety, race headquarters will prepare and arrange for rescue and medical assistance during the race.
  2. Emergency and first aid tents staffed by a doctor and/or nurse will be located at all aid stations. First aid will be provided to not only runners but also all staff, supporter and others relating the event who are in danger and need rescue.
    • If you are out on the course and close to an aid station, doctors, nurses or emergency rescue staff at the aid stations may be able to provide medical assistance out on the course.
    • Please note that, depending on the area, it may take a long period of time for help to reach you.
    • If you receive emergency medical assistance from a rescue crew and/or doctor, please make sure that you get examined by a medical expert at a hospital after the race.
  3. Doctors and rescue staff have the authority to stop a runner from continuing the race. This will be done by taking off the runner's number card and IC chips.
  4. If you drop out of the race, you can take a race shuttle that will take you back to the finish line or be picked up by your outside support. You can also call a taxi at your own expense.
  5. Depending on your condition, an emergency evacuation may be required. This evacuation will be at the expense of the person being rescued.
  6. In the case of an emergency, if you are unable to reach the race headquarters, you can also call the public emergency number "119" to directly ask for help.
  7. Each registered runner is covered for the following under the race's insurance policy:
    • Death & disability : 5,000,000 Japanese Yen
    • Hospitalization : 3,000 Japanese Yen (per day)
    • Hospital Treatment : 2,000 Japanese Yen (per day)


  1. Runners will be kept track of using IC chips and sensor mats. Organizer will know who and when cross the start/finish lines, aid stations and certain checkpoints.
  2. Runners must always have the IC chips attached to his/her shoes. If you change your shoes at an aid station, you must remember to re-attach the IC chips to the new pair of shoes.
  3. Please hand-in your IC chips after the race.

6. Cutoff times and timing at checkpoints

  1. Each aid station will have two checkpoints with separate cutoff times: one checkpoint will be located at the entrance of an aid station ("entrance cutoff") and the second checkpoint will be at the exit of an aid station ("exit cutoff"). This is to secure enough time for those who rush into the aid station close to the cutoff time. Runners must go through both the entrance and exit checkpoints within the cutoff times in order to continue racing.
    Example: A cutoff may be at 10:10am at the entrance of an aid station (entrance cutoff) and 10:20am at the exit of the aid station (exit cutoff). If a runner comes in close to 10:10am, he/she will have at least 10 minutes at the aid station, which should be enough time to refuel and safely continue the race.
    If you do not make it through the checkpoints by the cutoff times, you will be immediately disqualified. Race staff will remove the timing chips from your shoes at the checkpoint and you will not be able to continue the race. You will however, be allowed to enter and use the aid station.
  2. You are allowed to return to the aid station after crossing the exit checkpoint if it is within the entrance cutoff time. If you decide to return to the aid station or to drop from the race, please notify race staff and use the dedicated pathway to avoid crossing the checkpoint again. Please note, your race time will be recorded as the time you first enter and exit at aid station. If you re-enter an aid station, you must leave the aid station before the exit cutoff time or you will be disqualified from the race.


  1. The race course will be marked using marking tapes and signboards. Race staff will also be positioned along the course. Dangerous areas will be marked by signboards and ropes in order to reduce risk. Runners should follow those all signs on the course. (Note: Permission has been obtained from the appropriate land owners and property managers to put up temporary signs and marking tapes).
  2. There will be a "no-passing" section as well as other sections with specific rules/conditions. Please abide by these rules.
  3. Runners will be stopped at road intersections. Please follow the directions given by the race staff at these intersections.
  4. The above signs and markers will be set up just before the race and will be immediately removed after the race.
  5. Runners must carry the detailed course maps with them throughout the race (the maps are included in the mandatory equipment list). Review the maps carefully beforehand to get to know the course and use the maps to find your way back to the course in case you get lost. If you require assistance during the race, these maps will also be useful to help rescuers locate you.


If you decide to drop out of the race, you must notify race staff. Please remove your race bib and give your IC chips to a race staff member so that race headquarters can be notified. Once you've dropped out of the race, you will not be able to re-start.

Remember to keep your race bib with you because you will need it to retrieve your bags from the bag storage area.

  1. Runners must stay at aid station if you are not sure to arrive at next aid station by yourself because of your physical conditions, equipments, and unexpected change in natural environment.
  2. Tell an aid station staff that you've decided to drop out of the race, if you are not very confident to keep racing after resting and preparing at aid station.
  3. You will be able to return to the finish line area by a race shuttle that will stop by the aid stations. This race shuttle will not be available late at night/early morning however, you will be able to rest/sleep in a waiting area provided at the aid stations. Note that we do not guarantee to provide blanket and sleeping mat at all aid stations to those who drop.
  1. Runners are allowed to drop from the race only in case that you are in acute emergency or you can not move without assistance due to injury. If you can walk to next or past aid station without assistance, you must move to any aid station and tell the race staff to drop there.
  2. If you need to drop out of the race while out on the race course, call with your cell phone to the emergency contact number on your bib, then tell your bib number, where you are, and your physical conditions. Note that there are no rest/sleep areas available at the finish line. We highly recommend that you book a place to stay in case you end up dropping out of the race.



Once your mandatory equipment has been checked by race staff, you may not change them after that. The weight of your equipment must be a minimum of 2kg at the start of the race and upon leaving each aid station. Your equipment must weigh a minimum of 1kg at all times along the race course. There will be an equipment check during the race. If you do not have the mandatory equipment, you will be disqualified from the race.

You are responsible for bringing clothing/gear that provides adequate warmth and rain protection. Make sure you’ve trained with the gear that you intend to use during the race up in the mountains at high altitude, in sub-zero conditions as well as in heavy rain (these are the conditions you may encounter during the race). Make absolutely sure that your clothing/gear will protect you under these severe conditions. You will be required to show your gear at the mandatory equipment check, however, you will be responsible for deciding whether your clothing/gear is adequate to protect you during the race.

  1. Course map (You must download and carry with you the "Detailed Course Map" from the official website) (*1)
  2. Mobile phone (you must be able to make/receive calls in Japan with this mobile phone). The emergency phone number for race headquarters will be written on your runner number card/bib. Make sure your phone is fully charged before the race. You may receive emergency information on your phone before/during the race.
  3. Personal cup for hot/cold drinks at aid stations (minimum 150cc size). Paper cups will not be provided at the aid stations.
  4. Water (you must carry a minimum of 1L of water at the start line and upon leaving each aid station)
  5. Food
  6. 2 lights with replacement batteries for both lights. Remember that battery life will decline in cold temperatures.
  7. Survival blanket (minimum size of 130cm x 200cm)
  8. Whistle
  9. Adhesive elastic tape/band (minimum length of 80cm x 3cm) (*2)
  10. Portable/disposable toilet (*3)
  11. Warm fleece or warm long sleeve shirt. Cotton shirts are not allowed. (*4)
  12. Warm running pants or leggings or a combination of tights/leggings and long socks which cover the legs completely. Cotton pants/leggings are not allowed. (*5)
  13. Warm gloves/mittens and hat that covers your ears. (*6)
  14. Waterproof rain jacket with hood & rain pants (both made of waterproof and breathable membrane such as Gore-Tex or something similar; seams must be seam-sealed) (Item 11. and 12. cannot be used to replace item 14.)
  15. First aid kit (such as band aids, disinfectant, etc)
  16. Overseas travel/accident insurance policy (*7)
  17. Race number card/bib and Race IC Chips (to put on both shoes). These will be given to you at the race.
  18. Flashing reflector light (put this light on your backpack during the race so that cars will be able to see you at night). This light will be given to you at the race.
  19. Backpack or rucksack to store all mandatory equipments and other strongly recommended equipments (see following).
  • *1 You may download the Detailed Course Maps onto your SmartPhone. However, if your SmartPhone batteries run out during the race and you cannot show the maps, this will be considered the same as not having the maps with you, and disqualified as a result.
  • *2 Bring strong tape that can be used during emergencies such as injuries (e.g. broken bones) as well as emergency repairs (e.g broken equipment)
  • *3 If you use yours during the race, replacements are available at the aid stations.
  • *4 "Warm clothing for the upper body" = mid-layer clothing such as fleece jackets, wool sweaters and light-weight down jackets that create a layer of warm air between you and the fabric. Light weight underwear and base layers are not accepted.
  • *5 "Warm clothing for the lower body" = A. Full-length pants that go down to your ankles. B. Full-length tights that go down to your ankles. C. Short-length tights combined with long-length socks so that your leg is essentially completely covered.
  • *6 Wool and polyester knit hat that provides warmth. Caps, headbands and jacket hoods are not accepted.
  • *7 For runners coming from overseas and do not live in Japan, it is strongly recommended that you obtain adequate travel insurance coverage for the duration of your stay as medical/emergency rescue fees can be extremely expensive in Japan.
  • * The mandatory equipment list provided here is only the minimum. You will be running in severe conditions for two days and one night (one day and one night for the STY) so please ensure that you are well-prepared to manage your own safety and well-being and bring additional gear that you may need to do so. (You may start the race wearing short sleeves and shorts (i.e. you do not have to wear the mandatory clothing), however you must carry with you the mandatory clothing with you at all times.
  • * Organizer will dispatch rescue team to reach a runner who needs assistance due to extreme fatigue or injury on the course within three hours. However, note that it may take much more time when several rescue requests come in close, a runner who needs rescue is way out of the course, or it is in bad weather. We estimate more than six hours to rescue at worst.

Compass, bear bell, a change of clothes, sunscreen, vaseline/petroleum jelly, writing utensil/pen, cash

* You may use your bear bell up in the mountains but you must put away your bear bell (i.e. stop your bear bell from ringing) when running through residential and town areas both during the day and at night.

10. How to put on your number card (bib)

If runner put your bib on incorrectly, you could be disqualified.

  1. Attach each of your two race bibs to both the front and back side of your upper body with safety pins or a bib belt. Make sure the bibs are fully visible at all times and not hidden behind your clothing.
  2. Do not put the race bib on your lower body, such as on your shorts, tights or pants.
  3. Do not fold the edges to make the race bib smaller.


  1. There are no drop bags for the STY.
  2. UTMF runners can prepare one drop bag that can be picked up at the Kodomo-no-Kuni Aid Station.
  3. You may leave unneeded items in your drop bag during the race.
  4. Your drop bag will be transported to the finish line at Yagisaki Kouen in Kawaguchiko after the race.


In addition to rules and regulations above, a runner may be disqualified, penalized by addition to race time, or suspended from race at any time during the race for the following reasons:

  1. A runner's supporter throws garbage onto the course.
  2. Receiving outside support at other than the stipulated aid stations.
  3. Running with people who are not officially registered in the race as runner.
  4. Cheating (e.g. using other means of transportation, using substitute runners, and other unlawful actions)
  5. Doping and the use of prohibited drugs. Organizer shares the definition of prohibited drugs with Japan Olympic Committee's Anti Doping Regulation:


  • Both UTMF and STY are ultra long distance endurance race in the mountains for more than a whole day and night. Runners are responsible for your safety and self-management, and organizers are responsible for race staff, equipment, tools and race operation. With these organizer's responsibilities, the event is expected to be safer, by reducing level of trouble so that physically fit and mentally prepared runners can manage any trouble by yourselves.
  • Organizer is to put markings and signboard on the course to help physically fit and mentally prepared runners can guess and follow the course, as well as to arrange race staff at some point on the course when needed.
  • Organizer is responsible for any non-deliberate damage to property by race participants (e.g. plants and animals, objects, trails, etc.)

* Insurance coverage (liability insurance and property & casualty insurance for race participants, cancellation insurance). It is strongly recommended though, that you enroll in your own insurance coverage plan.


Organizer reserves the right to cancel or cut-short the race for the following reasons. In such a case, the race course cannot be changed to continue the race, nor will the race be postponed to a later date.

  • Weather warnings sent by the meteorological agency
  • The inability to ensure runner and staff safe due to risks such as landslides and rockfalls along the course
  • Natural disasters (or declared warnings issued by the "Tokai Earthquake Prediction Information" and “Tokai Earthquake Warning Information” centers)
  • Expecting damage on natural environment by runners due to bad weather
  • Other appropriate reasons for organizer to cancel or cut-short
  • * The decision as to whether or not the race will be cancelled will be made on the day before the race or on the day of the race. This will be communicated via the official race website.

Organizer will cancel or cut-short the race If Myojin-Toge natural environment protection area*1 is forecasted to have so heavy rain to get significant damage from traffic of runners*2.

The decision as to whether or not the race will be cancelled will be made by 6am of the day morning, and will be announced on the official race website and website designated in both PC and mobile format. Organizer will make decision with its own pre-event survey, and on-site survey at designated spots by organizer's course management specialist on race day morning. Organizer will report to natural environment authority in Shizuoka prefectural government on spots in our pre-event survey. In case of cut-short during the race, it will be cancelled at "Subashiri" aid station.

  • *1 "Natural environment protection area" is designated to protect natural environment properly and to pass coming generation as it is. Its purpose is different from natural park, that is to reserve and encourage proper use of outstanding natural scenery.
  • *2 Organizer will cancel or cut-short the race when Shizuoka prefecture's landslide disaster alert system estimates 10mm of rain per hour in its shortest term forecast for designated area (supposed to be Oyama Town). This standard is based on previous researches. In civil engineering, experts generally say more than 12-15mm of rain per hour will erode soil. One academic research paper tells no significant soil erosion occurred on hiking trail even with 15mm of rain per hour.

In case of less rain than our standards, organizer will specify part of course with fragile soil as "walking only" section to lower the damage on hiking trail. Race staff will be out on the course to speak out and get runners informed about that section. Runners who did not follow direction from race staff will be disqualified as our rules and regulation determine.


  • There will be race course clean-up events both before and after the race. While participation is not mandatory, we encourage all runners to come help us out and support the race by participating in the clean-up events. Environmental clean-up event report 2014 (in Japanese only):
  • An environmental impact study will be conducted continuously along the race course, based on the guideline for trail running races in national parks from Ministry of the Environment, Japan.


  1. Please be aware that there are no entry fee refunds (full or partial) for whatever the reason once you’ve signed up for the race.
  2. If you’ve signed up for the race through the Japanese registration system and opted to pay via bank transfer, you must make the payment by the payment deadline or your registration will be cancelled. If we receive your bank transfer after the payment deadline, your entry will be automatically cancelled and your payment will be returned to you minus a service charge.
  3. Your entry (race bib/number) cannot be transferred to another person.


  1. Food and drinks will be provided at the aid stations (A1 - A10). Only water will be provided at the Water Station (W1).
  2. The food and drink replenishment areas in the aid station can only be entered by the racer (supporters may not enter this area). Only the racer is allowed to pick up food and drinks at the replenishment areas. (except for A1 Shojiko, A2 Motosuko, W2 Awakura, and A9 Niju-Magari.)
  3. Only one supporter may enter the designated support area to directly/physically assist the racer. The supporter's bib should be pinned on his/her chest and clearly visible to race staff at all times. The number should match the racer’s.
  4. Each racer will be handed one race supporter bib upon check-in. If lost, this supporter bib cannot be reissued.
  5. A supporter may only bring into the designated support area one bag with a maximum capacity of 30 liters.
  6. The designated support areas will have tables and chairs. Supporters may not bring in their own tables and chairs into these areas. “Reserving space” by setting up tables/chairs within the support area is also not allowed.
  7. The designated support area will be shared by many supporters. Supporters may not stay in this area for long periods of time before the arrival of his/her racer. Supporters should be considerate of the other supporters and share the space with others. Supporters should estimate the arrival time of his/her racer using the Live Update website and enter the designated support area to prepare half an hour before arrival.
  8. Once a racer leaves the designated support area, supporters should exit and quickly make space for others.
  9. The food and drinks at the aid stations are only for the racers and are not available to the supporters.
  10. Supporters may not run alongside racers.
  11. Supporters are prohibited from performing medical services or providing professional therapeutic services for the racer.
  12. All garbage must be carried with you back home. Do not throw out garbage at the aid stations.
  13. The use of camping stoves/fire at A4 KODOMO-NO-KUNI, A7 SUBASHIRI, A8 YAMANAKAKO and A10 FUJIYOSHIDA is prohibited.
  14. Please do not shout or make loud noises when cheering on your racers when close to towns and residential areas as this may upset the local residents.